Ranges 5-9 are especially nasty to face this platform in:
Range - what it can engage with
10 - LRM at Medium Range, AC/10 at Medium Range
8-9 - LRM at Medium Range, AC/10 at Medium Range, SRM at Long Range
7 - LRM at Short Range, AC/10 at Medium Range, SRM at Long Range
6 - LRM at Min Range, AC/10 at Medium Range, SRM at Medium Range (especially nasty)
5 - LRM at effectively Med range, AC/10 at Short Range, SRM at Medium Range
Normally I don't like having different weapons on the same platform as that could leave excess ammo that can't be used, but this setup mixes them together nicely.
The only change I might make is converting the 12-ton AC/10 with its 2 tons of ammo into a Large Laser with 8 Heat Sinks and a half ton Power Amplifier. This cuts your damage by 2 pts, but the lack of ammo means it can take free shots as long as the target is in range of the Large Laser. You get the following additional range options:
Range - what it can engage with
10 - LRM at Medium Range, LL at Medium Range
11-14 - LRM at Medium Range, LL at Long Range
Changing the AC/10 to Large Laser also means the turret can be lighter. Previously the Turret was 2 tons due to supporting 19.5 tons of weaponry, but replacing the AC/10 with a Large Laser means the turret is only needing to support 12.5 tons of weaponry means it only needs to be 1.5 tons, thus making up the Power Amplifier difference. The final result is that I saved another ton, and put that into more LRM-5 ammo, for a total of 2 tons. The only problem is that the BV dropped to 1155 and the cost rose to 1,797,688 C-bills. The Tech Rating/Availability also changed to E/X-X-X-C.
So overall, you have a very nice little platform here that will make a raider's day very miserable. The slow speed is acceptable it doesn't have to catch the raiders, it just has to make them want to go somewhere else.